Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 73 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
2. 2.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
3. 3.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
4. 4.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one
5. 5.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
6. 6.True or false: to measure the same way is poor testing. (a) False (b) True
7. 7.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
8. 8.🧪 A paper bridge was tested three times. It held 360 g, 320 g and 340 g. What is the mean (average) load it held, in grams?
9. 9.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) build it with straws (b) load it with coins
10. 10.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
11. 11.🧪 A paper bridge was tested three times. It held 350 g, 180 g and 250 g. What is the mean (average) load it held, in grams?
12. 12.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
13. 13.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
14. 14.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) measure the same way (d) test it only once
15. 15.True or false: to hide a failed test is poor testing. (a) False (b) True
16. 16.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the weakest? (a) design B (b) design A (c) design C
18. 18.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
19. 19.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) record every result (d) change only one thing
20. 20.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) build it with straws
21. 21.True or false: to test it only once is good testing. (a) False (b) True
22. 22.🧪 A paper bridge was tested three times. It held 440 g, 290 g and 290 g. What is the mean (average) load it held, in grams?
23. 23.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) change lots at once (d) test it only once
24. 24.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
25. 25.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) load it with coins (c) strengthen the weak part (d) read the challenge rules
26. 26.True or false: to use the same load is good testing. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) guess, do not measure (d) use a new load each time
28. 28.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
29. 29.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
30. 30.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) choose and draw one (c) sketch three ideas (d) load it with coins
31. 31.🧪 A paper bridge was tested three times. It held 270 g, 230 g and 250 g. What is the mean (average) load it held, in grams?
32. 32.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) build it with straws (c) choose and draw one (d) strengthen the weak part
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design A (b) design B (c) design C
35. 35.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) repeat each test (d) change only one thing
36. 36.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) repeat each test (d) change lots at once
37. 37.True or false: to skip writing results is good testing. (a) False (b) True
38. 38.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
39. 39.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design A (b) design B (c) design C

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